(-)-4-epi-Marsupellol acetate (1R,2R,7R,8S,10S)-2,6,6-trimethyl-9-methylenetricyclo[5.4.0.0~2,8~]undec-10-yl rel-acetate Acetic acid 6,6,9a-trimethyl-2-methylene-decahydro-1,5-cyclo-benzocyclohepten-3-yl ester InChI=1/C17H26O2/c1-10-13(19-11(2)18)9-12-15-14(10)17(12,5)8-6-7-16(15,3)4/h12-15H,1,6-9H2,2-5H3/t12-,13+,14+,15-,17-/m0/s tricyclo[5.4.0.0~2,8~]undecan-10-ol, 2,6,6-trimethyl-9-methylene-, acetate, (1S,2S,7S,8R,10R)-